Liquid-fuel burner



w. CLARKE.

LIQUID FUEL BURNER.

APPLICATION FILED SEPT. 22, 1919.

1 53,112, V Paten tedSeptfM, 1920.

PATENT ()FEICE.

WILLIAM CLARKE, or MONTREAL, QUEBEC, CANADA.

LIQUID-FUEL BURNER.

Specification of Letters Patent. Patented Se t 14 1920 Application filed September 22, 1919. Serial No. 325,545.

To all whom it may concern:

Be it known thatv I, WILLIAM CLARKE, a subject of the King of Great Britain, and residing at 158 Aylwin street, in the city and district of Montreal, in the Province of Quebec, in the Dominion of Canada have invented a new and useful Liquid-Fuel Burner, of which the following is the specification.

The invention relates to liquid fuel burner as described in the present specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially in the novel construction of the air deflecting plates in relation to a gravity fuel feed.

The objects of the invention are primarily to make a low pressure burner equally efficient to a high pressure burner, particularly for industrial pursuits; further to eflect economy in the consumption of fuel and the saving of power; further to eliminate complications in such devices; and generally to provide a serviceable and durable burner at a reasonable cost to the manufacture or consumer.

In the drawings, Figure 1 is a perspective view of the main burner parts separated and partly broken away and in section to disclose the air deflecting chamber.

Fig. 2 is a perspective detail of the slide valve for regulating the air supply.

Fig. 3 is a perspective detail of the coupling plate formed to contain the slide valve.

Fig. 4 is a sectional detail of the liquid fuel nozzle.

Fig. 5 is a diagrammatic view, showing the conformation of a deflecting plate.

Fig. 6 is a front elevation of the deflecting members and supporting body.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, the gravity liquid fuel feed is through the pipe 1, the feed being controlled by the valve 2. The pipe 1 enters the air pipe 3 through the cover plate 4, closing the opening in the back of said pipe made to provide ready accessibility to the interior of the device.

The pipe 1 enters through the boss 5, the top of which is threaded for the set screw 6 to effectually lock said pipe in place.

The air pipe 3 is curved and terminates at the inlet end in the coupling plate 7 and at the other end in the flange 8.

The outer coupling plate 9- is formed formed with the circular discharge opening 7 16 and at its inner end with the flange 17,

the flange 8 in assembling the parts.

The interior of the burner casing 15 contains the deflecting plates 18 extending 1ongitudinally from end to end, the inner ends 19 of said plates having a spear head shape, while the plate in cross section is formed to taper from the butt ends of said spear heads to the outer pointed ends 20, which converge to a central fuel opening, the plates intermediately describing opposing curves in exaggerated S-shape.

The plates 18 are preferably integral with the body 21 or may be rigidly secured thereto, said blades extending from said body to the wall of the casing 15. The body 21 is formed with a liquid fuel passage 22 threaded at each end 23 and 24. The end of the pipe 1 is screw-threaded into the end 24 and the nozzle 25 is screw-threaded into the end 23 and is formed with the outlets 26 through which the oil fed by gravity finds egress and is there caught by the whirlwind caused by the air flowing under pressure through the passages separated by the deflecting plates 18.

In operation this invention is generally more adaptable to manufacturing plants, though it may be used in marine or heating installations. The air under pressure moderately greater than atmospheric is fed into the air pipe and flows into the burner casing, where it is doubly deflected, which gives it the desired twist to form a whirlwind at the mouth, though the air discharges are substantially individual and each carry the broken oil particles or vapor into the whirl and this results in a very effective flame following the ignition.

Various-changes may be made in the construction, without departing from the spirit of the invention, and so long as they are within the scope. of the claim for novelty following, the protection accorded shall not be invalidated.

the latter being rigidly secured by bolts to What I claim is In a liquid fuel burner, an air pipe having an opening and a reinovable cover plate closing said opening, a gravity feed pipe extending through said cover plate, a slide valve closing the inlet end of said air pipe, a burner casing joined to the outlet end of said air pipe and having an outlet at the outer end thereof, a deflecting member inserted in said burner casing and formed of a central body having a fuel passage and a plurality of defleeting ribs longitudinally arranged and extending from the inner end of said body and in cross section shape gradually tapering to the inwardly converging ends beyond said body and running for about the length of the burner casing in substantially S-shape and a nozzle in the center of said converging ends.

Signed at the city of Montreal, Quebec, 20 

